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Background: Salmonella enterica subsp. enterica serovar Rubislaw (antigenic formula 11:r:e,n,x) is a serovar of the O:11 (F) serogroup. Serovar Rubislaw was first described in 1934 from a case report of human infection. This serovar has been frequently isolated from farm and natural environmental reservoirs, including water from canals, ponds, rivers, and streams in the U. S., Brazil, and Mexico. S. Rubislaw has also been isolated from several types of fresh produce, including papaya, mango, avocado, and peppers, as well as spices such as ground black pepper.

NCBI PD link for serovar Rubislaw: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Rubislaw%22)

Genetic characteristics: S. Serovar Rubislaw has been found to be polyphyletic with two phylogenetic groups identified. Serovar Rubislaw is typically not associated with multidrug-resistant (MDR) clinical infections in humans. However, in a survey of equine clinical isolates submitted to veterinary hospital in the Southern U.S., 4 out of 12 S. Rubislaw isolates examined in the study showed phenotypic resistance to several antibiotics routinely surveilled by the U.S. National Antimicrobial Resistance Monitoring System (NARMS), including ampicillin, cetiofur, ceftriaxone, gentamicin, sulfisoxazole, and trimethoprim-sulfamethoxazole.

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